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Inequality and the Tails: The Palma Proposition and Ratio Revisited

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  • Alex Cobham
  • Luke Schlogl
  • Andy Sumner

Abstract

This paper revisits the earlier assessments of the Palma Proposition and the ‘Palma Ratio’. The former is a proposition that currently changes in income or consumption inequality are (almost) exclusively due to changes in the share of the richest 10 per cent and poorest 40 per cent because the ‘middle’ group between the richest and poorest always capture approximately 50 per cent of gross national income (GNI). The latter is a measure of income or consumption concentration based on the above-mentioned proposition and calculated as the GNI capture of the richest 10 per cent divided by that of the poorest 40 per cent. In this paper we do the following: note the use already being made of the Palma Ratio; consider the issue of hidden (or partially hidden) inequality and how the Palma may be useful in bringing this to light in the parts of the distribution that we are likely to be more interested in (the richest and the poorest); revisit the empirical basis of the Palma Proposition (the relative stability of the ‘middle’) with a new and expanded dataset across and within developing and developed countries. We find the data reaffirms the Palma Proposition and that the proposition is getting stronger over time. We also discuss the theoretical and empirical questions and implications arising from the Palma Proposition as areas for future exploration.

Suggested Citation

  • Alex Cobham & Luke Schlogl & Andy Sumner, 2015. "Inequality and the Tails: The Palma Proposition and Ratio Revisited," Working Papers 143, United Nations, Department of Economics and Social Affairs.
  • Handle: RePEc:une:wpaper:143
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    Cited by:

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    2. Tchamyou, Vanessa S. & Erreygers, Guido & Cassimon, Danny, 2019. "Inequality, ICT and financial access in Africa," Technological Forecasting and Social Change, Elsevier, vol. 139(C), pages 169-184.
    3. José Gabriel Palma & Joseph E. Stiglitz, 2016. "Do Nations Just Get the Inequality They Deserve? The “Palma Ratio” Re-examined," International Economic Association Series, in: Kaushik Basu & Joseph E. Stiglitz (ed.), Inequality and Growth: Patterns and Policy, chapter 2, pages 35-97, Palgrave Macmillan.
    4. Simplice A. Asongu & Nicholas M. Odhiambo, 2019. "Inequality and the Economic Participation of Women in Sub-Saharan Africa: An Empirical Investigation," Working Papers of the African Governance and Development Institute. 19/027, African Governance and Development Institute..
    5. Meniago, Christelle & Asongu, Simplice A., 2018. "Revisiting the finance-inequality nexus in a panel of African countries," Research in International Business and Finance, Elsevier, vol. 46(C), pages 399-419.
    6. Vanessa S. Tchamyou, 2019. "The Role of Information Sharing in Modulating the Effect of Financial Access on Inequality," Journal of African Business, Taylor & Francis Journals, vol. 20(3), pages 317-338, July.
    7. Sanghamitra Bandyopadhyay & Rui Sun, 2021. "How large is the effect of inequality on economic growth?," Economics Bulletin, AccessEcon, vol. 41(2), pages 523-531.
    8. Chimere O. Iheonu & Ozoemena S. Nwodo & Uchechi S. Anaduaka & Ugochinyere Ekpo, 2020. "Inequality and Female Labour Force Participation in West Africa," Working Papers 20/076, European Xtramile Centre of African Studies (EXCAS).
    9. Vanessa Simen Tchamyou, 2020. "Education, lifelong learning, inequality and financial access: evidence from African countries," Contemporary Social Science, Taylor & Francis Journals, vol. 15(1), pages 7-25, January.
    10. Mohammad Zulfan Tadjoeddin & Athia Yumna & Sarah E. Gultom & M. Fajar Rakhmadi & Asep Suryahadi, 2021. "Inequality and violent conflict: new evidence from selected provinces in Post-Soeharto Indonesia," Journal of the Asia Pacific Economy, Taylor & Francis Journals, vol. 26(3), pages 552-573, July.
    11. Andy Sumner, 2016. "The world's two new middles Growth, precarity, structural change, and the limitations of the special case," WIDER Working Paper Series 034, World Institute for Development Economic Research (UNU-WIDER).
    12. Tahsin, Emine, 2019. "Concentration of income inequality on the basis of Palma ratio and income deciles of Turkey on national and regional level," MPRA Paper 92490, University Library of Munich, Germany.
    13. Chimere O. Iheonu & Ozoemena S. Nwodo & Uchechi S. Anaduaka & Ugochinyere Ekpo, 2020. "Inequality and Female Labour Force Participation in West Africa," Working Papers of the African Governance and Development Institute. 20/076, African Governance and Development Institute..
    14. Emine TAHSİN, 2019. "An Investigation of the Palma Ratio for Turkey Both on National and Regional Level," Sosyoekonomi Journal, Sosyoekonomi Society, issue 27(41).
    15. Chima M. Menyelim & Abiola A. Babajide & Alexander E. Omankhanlen & Benjamin I. Ehikioya, 2021. "Financial Inclusion, Income Inequality and Sustainable Economic Growth in Sub-Saharan African Countries," Sustainability, MDPI, vol. 13(4), pages 1-15, February.
    16. Germà Bel & Jordi J. Teixidó, 2019. "“The Political Economy of the Paris Agreement. Income Inequality and Climate Policy”," IREA Working Papers 201915, University of Barcelona, Research Institute of Applied Economics, revised Sep 2019.
    17. Chimere O. Iheonu & Ozoemena S. Nwodo & Uchechi S. Anaduaka & Ugochinyere Ekpo, 2020. "Inequality and Female Labour Force Participation in West Africa," Working Papers of The Association for Promoting Women in Research and Development in Africa (ASPROWORDA). 20/008, The Association for Promoting Women in Research and Development in Africa (ASPROWORDA).
    18. Chimere O. Iheonu & Ozoemena S. Nwodo & Uchechi S. Anaduaka & Ugochinyere Ekpo, 2020. "Inequality and Female Labour Force Participation in West Africa," Research Africa Network Working Papers 20/076, Research Africa Network (RAN).
    19. Dorothee Rodenhäuser & Benjamin Held & Hans Diefenbacher, 2019. "Der Nationale Wohlfahrtsindex," IMK Studies 64-2019, IMK at the Hans Boeckler Foundation, Macroeconomic Policy Institute.

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    More about this item

    Keywords

    Inequality; Gini; Palma Ratio;
    All these keywords.

    JEL classification:

    • D63 - Microeconomics - - Welfare Economics - - - Equity, Justice, Inequality, and Other Normative Criteria and Measurement

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